This was my first IB Art project, and in a lucky coincidence it fits this challenge!

Without flash:

With flash:

Those are old CDs from my mom's office, and beer bottle caps saved up by my parents. I glued them onto a board canvas with hot glue, then painted the line with acrylic paint. It was planned around the materials- I had hundreds of bottlecaps and at least 50 CDs just sitting around, and they called to me.